Caterpillar RD 6 Diesel Crawler Tractor 1936

The Caterpillar RD 6 Diesel Crawler Tractor was powered
by a six cylinder diesel engine of 78 h.p. at the belt pulley. Starting
was by the means of a two cylinder horizontally opposed petrol powered
donkey engine. The Caterpillar Tractor of Illinois was formed
when the Holt Tractor Company, (who had already registered the Caterpillar
name) merged with the Best Tractor Company in 1925. While Holt/Caterpillar
tractors first appeared in the United Kingdom in 1915, all sales were
handled by importers or Caterpillar appointed concessionaires until
1950 when the American Caterpillar Company set up it's own spares
depot near Leicester. The first British produced Caterpillar
tractors were made at Glasgow in 1958.